245313211251 has 8 divisors (see below), whose sum is σ = 327089419920. Its totient is φ = 163539571712.

The previous prime is 245313211207. The next prime is 245313211343. The reversal of 245313211251 is 152112313542.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245313211251 - 2⁷ = 245313211123 is a prime.

It is a super-2 number, since 2×245313211251² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245313211201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407190 + ... + 810203.

It is an arithmetic number, because the mean of its divisors is an integer number (40886177490).

Almost surely, 2^245313211251 is an apocalyptic number.

245313211251 is a deficient number, since it is larger than the sum of its proper divisors (81776208669).

245313211251 is a wasteful number, since it uses less digits than its factorization.

245313211251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284565.

The product of its digits is 7200, while the sum is 30.

Adding to 245313211251 its reverse (152112313542), we get a palindrome (397425524793).

The spelling of 245313211251 in words is "two hundred forty-five billion, three hundred thirteen million, two hundred eleven thousand, two hundred fifty-one".